We are all affected by the quality of our roads. Wherever we want to go, we are often reminded by the fact that the road surface changes. We do not like to drive over bumps, as it is uncomfortable and can damage our cars. In the worst case, they can cause accidents.
Governments, cities, and companies spend huge amounts of money to maintain the road network, and a challenge is to always know where to take action. The road quality is often a subject for complains by the citizens, but the methods for an objective evaluation is rare. Ocular/manual inspections are on one side, extremely expensive special measurement vehicles are on the other side. It is impossible to make a comprehensive manual inspection as it takes lots of time; it will (in any case) be subjective. The special made measurement vehicles are too expensive and only allows measurements to some prior motorways or highways once per year.
Surface roughness, often shortened to just roughness, is a measure of the texture of a surface. It is quantified by the vertical deviations of a real surface from its ideal form. If these deviations are large, the surface is rough; if they are small the surface is smooth. Roughness is typically considered to be the high frequency, short wavelength component of a measured surface (see surface Metrology).
Roughness plays an important role in determining how a real object will interact with its environment. Rough surfaces usually wear more quickly and have higher friction coefficients than smooth surfaces (see Tribology). Roughness is often a good predictor of the performance of a mechanical component, since irregularities in the surface may form nucleation sites for cracks or corrosion.
Although roughness is usually undesirable, it is difficult and expensive to control in manufacturing. Decreasing the roughness of a surface will usually increase exponentially its manufacturing costs. This often results in a trade-off between the manufacturing cost of a component and its performance in application.
The International Roughness Index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of slope (in/mi, m/km, etc). Since its introduction in 1986, IRI has become the road roughness index most commonly used worldwide for evaluating and managing road systems.
The IRI was defined as a mathematical property of a two-dimensional road profile (a longitudinal slice of the road showing elevation as it varies with longitudinal distance along a travelled track on the road). As such, it can be calculated from profiles obtained with any valid measurement method, ranging from static rod and level surveying equipment to high-speed inertial profiling systems.
A revolution to road maintenance planning
The possibility to gather road condition data with a smartphone is a revolution to the global road maintenance. For developed countries it founds data for new research areas and facilitates continuous follow ups in performance based contracts.
For many actors around the world it has not either been possible to monitor road quality due to the high costs and complex tools. In developing countries it's a great step towards a far more effective planning and infrastructure development. This is proven on Sri Lanka and in Cambodia, where Roadroid is used both for tactical planning, program analysis and object quality control.
A rational approach saving time and money.
The system has a good accuracy and can easily be mounted on several types of vehicles. It is user friendly and has a great potential for tailor made reports. Roadroid is also an option for organizations that had enough of paying expensive measurements year after year.
The concept is built for mass produced technology and development can be continuous at reasonable costs. As the results are automatically mapped to internet maps it saves costs for various expert mapping tools (data can also be exported in preferred standard formats as IRI).
We are looking for alliances in other parts of the world!
For more information please contact:
Phone: +46 72 2426620
This is our offerings - please send us en e-mail for further inquiries:
Regional yearly license (global service)
Use Roadroid for your tactical planning, program analysis and object quality control.
- Use standard smart phones, install our app (sent to you by e-mail) and a car holder - start your IRI data collection in 15 minutes.
- Validated phone/holder models: Samsung Galaxy SII, Note and Tab (GT-P1000). Current up comer: Samsung Galaxy SIII
- Validated car types:
During our market introduction 2013 we will offer value packages for test and evaluation. Please contact us for a quotation for your region!
Periodic report (for countries with a developed road database)
In countries as Sweden we are offering following two products with periodic reports
1) City Street Report
Collect your own data (or we offer to do it for you) and receive an annual report of your citys streets
- Breakdown to your city´s districts
- All streets sorted by name – and a summary of the 30 worst streets.
- Pricing per citizen
2) Highway Contractor Reports
Use your road guards to collect your data - they drive your roads several times per week for ocular inspections and bring Roadroid as a support.
- Monthly or quarterly reports for the roads of your district
- Excellent support in performance based contracts
- Pricing per kilometer of road.
Our data is correlated to IRI and can be exported to you as a custom shape file or as weighted 100 m averages. The data is further benchmarked to the global Roadroid index (PATENT PENDING). Our optional log-in feature allows you to do your own statistics, filter areas on time and geography, monitor speed and GEO-tagged photos. The public view on our homepage is only showing information per road links but will show no further details of the road state.
Maybe you had enough of paying expensive measurements from year to year?
- Join the revolution of global road maintenance!
Roadroid is accurate and easy to use.
It allows you to gather powerful data for continuous follow ups on your calculations and contracts and also investigating new research areas. For developing countries it might a great step towards an effective planning and infrastructure development. As the results are mapped to an internet toolbox with maps you can also save costs for expert mapping tools.
Phone: +46 72 2426620